On the vestibular threshold.
D000435:Alcoholic Intoxication; D000818:Animals; D004585:Electrooculography; D005133:Eye Movements; D005283:Fentanyl / Q000494:pharmacology; D006112:Gravitation; D006801:Humans; D011817:Rabbits; D012399:Rotation; D014724:Vestibular Function Tests; D014722:Vestibule, Labyrinth / Q000187:drug effects / Q000502:physiology*; D014893:Weightlessness
D005283:Fentanyl